While the board is designed to take two tda7293 ics it can naturally be operated with only one and the pcb is small enough so that this is not an inconvenience.
Tda7293 amplifier circuit diagram.
The schematic is shown in figure 1 and is based on the pcb version.
The tda7293 amp belongs to a sort of class ab audio power amplifiers which is a monolithic integrated circuit available in multiwatt15 package 120 v 100 w dmos audio amplifier with mute and standby.
Power amplifier using the tda7293 chip manufactured by st microelectronics includes schematic and pcb design for easy mounting of the power amplifier the tda7293 is a monolithic integrated circuit in multiwatt15 package intended for use as audio class ab amplifier in hi fi field applications home stereo self powered loudspeakers top class tv.
All unnecessary functions have been disabled so it functions as a perfectly normal power amplifier.
In the circuit of the tda7293 100w amplifier circuit the dc diaphragm capacitors must be added in addition to the bridge diode.
The tda7293 is designed for use as audio class ab amplifier in hi fi field applications such as home stereo self powered loudspeakers and topclass tv.
The power supply consists of bridge rectifier and huge electrolytic capacitors ranging from 4 7μf to 12μf the series combination of resistors and leds discharge the capacitors.